Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-04-14
1997-12-30
Sikes, William L.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
359 37, G09G 336, G02F 1133
Patent
active
057036144
ABSTRACT:
An optical modulation device comprises scanning electrodes and signal electrodes disposed opposite to and intersecting with the signal electrodes, and an optical modulation material disposed between the electrodes, a pixel being formed at each intersection of the electrodes and showing a contrast depending on the polarity of a voltage applied thereto. The device is driven by a method comprising, in a writing period for writing in all or prescribed pixels among the pixels on a selected scanning electrode, a first phase for applying a voltage of one polarity having an amplitude exceeding a first threshold voltage of the optical modulation material to the all or prescribed pixels, and a second phase for applying a voltage of the other polarity having an amplitude exceeding a second threshold voltage of the optical modulation material to a selected pixel and applying a voltage not exceeding the threshold voltages of the optical modulation material to the other pixels, respectively among the all or prescribed pixels. The duration of a continually applied voltage of the same polarity applied to a pixel on a scanning electrode is 2.5 times the duration of the first phase in the writing period at the maximum.
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patent: 4705345 (1987-11-01), Ayliffe et al.
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Inaba Yutaka
Kanbe Junichiro
Kaneko Shuzo
Mouri Akihiro
Toyono Tsutomu
Canon Kabushiki Kaisha
Duong Tai V.
Sikes William L.
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